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Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the highest point of the building, irrespective of material or function of the highest element (i.e., including antennae, flagpoles, signage and other functional-technical equipment).
Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the architectural top of the building, including spires, but not including antennae, signage, flag poles or other functional-technical equipment. This measurement is the most widely utilized and is employed to define the Council on Tall Buildings and Urban Habitat (CTBUH) rankings of the "World's Tallest Buildings."
Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the highest occupied floor within the building.
The number of floors above ground should include the ground floor level and be the number of main floors above ground, including any significant mezzanine floors and major mechanical plant floors. Mechanical mezzanines should not be included if they have a significantly smaller floor area than the major floors below. Similarly, mechanical penthouses or plant rooms protruding above the general roof area should not be counted. Note: CTBUH floor counts may differ from published accounts, as it is common in some regions of the world for certain floor levels not to be included (e.g., the level 4, 14, 24, etc. in Hong Kong).
The number of floors below ground should include all major floors located below the ground floor level.
DC Tower I
Danube City Tower 1
Building
Completed
2013
residential / office / hotel
concrete
220.0 m / 722 ft
60
4
16
253
254
29
8 m/s
93,500 m² / 1,006,426 ft²
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Proposed
Construction Start
Completed
Other Consultant refers to other organizations which provided significant consultation services for a building project (e.g. wind consultants, environmental consultants, fire and life safety consultants, etc).
These are firms that consult on the design of a building's façade. May often be referred to as "Cladding," "Envelope," "Exterior Wall," or "Curtain Wall" Consultant, however, for consistency CTBUH uses the term "Façade Consultant" exclusively.
Material Supplier refers to organizations which supplied significant systems/materials for a building project (e.g. elevator suppliers, facade suppliers, etc).
You must be a CTBUH Member to view this resource.
The main contractor is the supervisory contractor of all construction work on a project, management of sub-contractors and vendors, etc. May be referred to as "Construction Manager," however, for consistency CTBUH uses the term "Main Contractor" exclusively.
Other Consultant refers to other organizations which provided significant consultation services for a building project (e.g. wind consultants, environmental consultants, fire and life safety consultants, etc).
These are firms that consult on the design of a building's façade. May often be referred to as "Cladding," "Envelope," "Exterior Wall," or "Curtain Wall" Consultant, however, for consistency CTBUH uses the term "Façade Consultant" exclusively.
Material Supplier refers to organizations which supplied significant systems/materials for a building project (e.g. elevator suppliers, facade suppliers, etc).
Best Tall Building Europe 2014 Award of Excellence
2014 CTBUH Awards
17 October 2016
Real-Time Controlled TMD of Danube City Tower
Felix Weber, Peter Huber, Hans Distl & Christian Braun, MAURER AG
Since 2014, a MAURER controlled TMD has mitigated the first bending mode of the Danube City Tower in Vienna, Austria. It consists of a pendulum...
Austria’s DC Tower 1 has become an invaluable landmark of the Donau-city in Vienna. The building comprises an entirely new urban district with a diverse range of functions: offices, a four star hotel, apartments, a sky bar, a public open space, restaurants, and a fitness center. The folds contrast with the no-nonsense rigor of the other three façades, creating a tension that electrifies the public space at the tower’s base. The façade’s folds give the tower a liquid, immaterial character, a malleability constantly adapting to the light, a reflection or an event. Dancing on its platform, the tower is slightly oriented toward the river to open a dialogue with the rest of the city, turning its back on no one, neither the historic nor the new Vienna. A subtle game of flat and folded façades affords the glass and steel tower a sensual identity.
The aim of the designers was to get the basic horizontality of the city and the public space to coincide with vertical trajectories. On the back façade, the public space rises from the level of the esplanade in a series of staggered steps to reach the ground reference plane. This structuring of topography launches the tower and creates a spatial interface accessible to all, making the occurrence of such a physical object both possible and acceptable. On the other three façades, 54 metallic umbrellas gradually rise from the ground on the approach, softening the hard edges of the project and blending city and movement into the tower’s future. Important work on neighborhood fringes remains to be done to reveal the geographic features of this urban landscape and take better advantage of the river bank.
With this first substantial tower, the city of Vienna has demonstrated that the punctual and controlled emergence of high-rises can participate in creating the city and produce contemporary, economical, high-energy performance mixed-use buildings, adapted to metropolitan business requirements and lifestyles.
In each office, openings provide natural fresh air. The curtain walls are composed of three different glass layers, so as to provide solar protection.
Active floors, used to a large extent in the tower, minimize energy consumption by reducing the volume of air flow to exactly match the thermodynamic heat load. Water recycled from the adjacent Danube River is used for the cooling process.
At the bottom of the tower, the connected building is provided with photovoltaic roofing and thermal barrier coatings (TBCs), which serve to insulate components from large and prolonged heat loads by utilizing thermally insulating materials, which can sustain an appreciable temperature difference between the load-bearing alloys and the coating surface.
Moreover, on the square, large sunshade screens made of perforated black panels provide shelter for pedestrians and act as wind breakers as well. Some of these umbrellas on the lower square are planned to become supports for plantings, in the second development phase, supported by an automatic watering system. The project is in the process of obtaining LEED Gold certification.
Best Tall Building Europe 2014 Award of Excellence
2014 CTBUH Awards
17 October 2016
Real-Time Controlled TMD of Danube City Tower
Since 2014, a MAURER controlled TMD has mitigated the first bending mode of the Danube City Tower in Vienna, Austria. It consists of a pendulum...
26 October 2015
The Vienna Donau City Tower – 2000mm Flat Slabs as Outrigger Structure for Unique Landmark Building
The Donau City Tower I, with an architectural height of 220m, has become Austria’s tallest skyscraper, and is the new landmark building in Vienna’s skyline....
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